Worchester 30I Pressure keeps creeping up

[MetalOwel]

Thank you for your advise, as far as I'm aware there's only one loop which the key has been kept out of for the full night. I have had no leaks from it.

The preassure raises without the CH turned on. It raises very very slowly. Like 0.3 an hour.

 

[Madrab]

OK - isolate the cold water into the boiler - if it stops and everything else is equal re filling loops etc then it has to be the plate.

Has the system been really dirty? Plates only tend to pinhole or block up when corrosion is bad or some other chemical has damaged it.

 

[MetalOwel]

It doesn't look dirty, a month ago the plate was leaking because the rubber rings where pretty much melted and I change all 4 rubber rings.

 

[dilalio]

Just isolate the cold main for a couple of hours and see what happens.

 

[MetalOwel]

Thanks everyone! Changing the heat exchange plate has solved my issue. Thank you all for your time!

 

[kidgreen61]

Thanks everyone! Changing the heat exchange plate has solved my issue. Thank you all for your time!

Told ya

 

[MetalOwel]

Yes you was the first to say this and you was 100% correct. Thanks you amazing person!

 

[dilalio]

Yes you was the first to say this and you was 100% correct. Thanks you amazing person!

And your 26.9 checks?

 

[MetalOwel]

They all looking good

 

[terryplumb]

If this is happening whilst boiler is not in use ,Filling loop is passing ,or could be a fault within the boiler with PHEX

Yes you was the first to say this and you was 100% correct. Thanks you amazing person!

I told you it could be the plate hex in the first reply to your original post

 

[dilalio]

Told ya

Very rare for phex but mixed messages from OP rgds fault finding process.

And, I guess no confirmation of 26.9 checks... At the very least coz defo some parts of the gas system disturbed.

 

[dilalio]

They all looking good

Really? What's your ratio then?

 

[MetalOwel]

I got told by the guy who installed my parts they all good. Thanks for your concern but it seems you are being a little aggressive. Maybe you did not understand my messages but others did. Have a good night sir.